34156420 has 48 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 13052160.

The previous prime is 34156411. The next prime is 34156427. The reversal of 34156420 is 2465143.

It is a super-2 number, since 2×34156420² = 2333322054432800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (34156427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54871 + ... + 55489.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^34156420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34156420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37497600).

34156420 is an abundant number, since it is smaller than the sum of its proper divisors (40838780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34156420 is a wasteful number, since it uses less digits than its factorization.

34156420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 34156420 is about 5844.3494077613. The cubic root of 34156420 is about 324.4572242035.

The spelling of 34156420 in words is "thirty-four million, one hundred fifty-six thousand, four hundred twenty".